New mum Victoria Beckham has tweeted that she's on the mend following reports she was treated for a back condition. 

The fashion designer - who had her fourth child, Harper Seven, last month - was said to be resting and receiving medical attention after a slipped disk.

No details of the condition are being released as it's "a private medical issue".

However Los Angeles-based Victoria, 37, still plans to travel to New York with baby Harper next month to showcase her Spring/Summer 2012 collection.

She was spotted walking from her car in flats instead of her signature heels.

After several says rest, Victoria tweeted: “Thank u for your kind messages. I'm feeling much better and enjoying every precious minute with baby Harper, I'm so in love. X VB” .

Photo: © Rex